NO I am not interested with flirting with you. I'm just not.
NO I won't reply back to "ur hot" "here's a 10" and other crap like that, there's not much here, read my profile, I'll take the time out of my day to read yours.
NO If you aren't interested in learning anything, or racist/sexist/homophobic/etc, then I'm not going to talk to you. Intelligent, open-minded people ONLY.
Otherwise, drop a hi, but please make it relevant to something in life.